About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Radiation Effects in Metals and Ceramics
|
Presentation Title |
H-58: Neutron Radiation Induced Patterning of Fe-Cr System: A Phase-field Approach |
Author(s) |
Bohyun Yoon, Jeongwhan Lee, Kunok Chang |
On-Site Speaker (Planned) |
Bohyun Yoon |
Abstract Scope |
Fe-Cr Ferritic/Martensitic steel is one of the promising structural materials for the nuclear reactor due to their high strength and fracture toughness. During the nuclear power plants operating, the structural material undergoes the neutron irradiation, it means the material degrades. One of the well known degradation mechanism of Fe-Cr system under the neutron irradiation is radiation induced segregation (depletion) in the vicinity of the grain boundary. We found that due to the depletion of the chromium atom near the grain boundary, patterning of chromium rich phase takes place which is consistent with former experimental observation and other computational predictions. We developed the GPU (Graphic Processor Unit) accelerated phase-field code to simulate the microstructural evolution of Fe-Cr system. The effect of the elastic interaction in the radiation induced patterning will be discussed. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |